424423121 has 4 divisors (see below), whose sum is σ = 446761200. Its totient is φ = 402085044.

The previous prime is 424423079. The next prime is 424423169. The reversal of 424423121 is 121324424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424423121 - 2¹⁴ = 424406737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424423171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11169011 + ... + 11169048.

It is an arithmetic number, because the mean of its divisors is an integer number (111690300).

Almost surely, 2^424423121 is an apocalyptic number.

It is an amenable number.

424423121 is a deficient number, since it is larger than the sum of its proper divisors (22338079).

424423121 is a wasteful number, since it uses less digits than its factorization.

424423121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22338078.

The product of its digits is 1536, while the sum is 23.

The square root of 424423121 is about 20601.5320061397. The cubic root of 424423121 is about 751.5069676662.

Adding to 424423121 its reverse (121324424), we get a palindrome (545747545).

The spelling of 424423121 in words is "four hundred twenty-four million, four hundred twenty-three thousand, one hundred twenty-one".